InterviewSolution
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19.a)How can you distinguish between an unpolarized light and a polarized light using a single Polaroidonly. b)Draw diagram showing how light reflected from a transparent medium gets polarized.c)StateBrewster's law |
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Answer» Lightin which wave oscillate only in one angle. Then it is calledpolarized light. If it oscillate in all the angles then it is calledunpolarized light. we canpolarizedalightusing a filter which only allowslightin a certain angle.Whenunpolarized lightis transmitted through a Polaroid filter, it emerges with one-half the intensity and with vibrations in a single plane; it emerges aspolarized light. A Polaroid filter is able to polarizelightbecause of the chemical composition of the filter material.The elctric field vector which are parallel to the transmission axis of palaroids gets transmitted and other which are perpendicular to its transmission axis will be absorbed.If electric field are not horizontal or vertical then they should be split into horizontal and vertical components |
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